linux-kernel - [PATCH 13/13] irqchip/ts4800: Convert to platform remove callback returning void

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Message-ID:  <0bdce86b50e5aa50cffbc4add332cbfbad87521e.1703284359.git.u.kleine-koenig@pengutronix.de>
Date: Fri, 22 Dec 2023 23:50:44 +0100
From: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To: Thomas Gleixner <tglx@...utronix.de>
Cc: linux-kernel@...r.kernel.org,
	kernel@...gutronix.de
Subject: [PATCH 13/13] irqchip/ts4800: Convert to platform remove callback returning void

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.

To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
---
 drivers/irqchip/irq-ts4800.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/irqchip/irq-ts4800.c b/drivers/irqchip/irq-ts4800.c
index b2d61d4f6fe6..c69a819f099c 100644
--- a/drivers/irqchip/irq-ts4800.c
+++ b/drivers/irqchip/irq-ts4800.c
@@ -139,13 +139,11 @@ static int ts4800_ic_probe(struct platform_device *pdev)
 	return 0;
 }

-static int ts4800_ic_remove(struct platform_device *pdev)
+static void ts4800_ic_remove(struct platform_device *pdev)
 {
 	struct ts4800_irq_data *data = platform_get_drvdata(pdev);

 	irq_domain_remove(data->domain);
-
-	return 0;
 }

 static const struct of_device_id ts4800_ic_of_match[] = {
@@ -156,7 +154,7 @@ MODULE_DEVICE_TABLE(of, ts4800_ic_of_match);

 static struct platform_driver ts4800_ic_driver = {
 	.probe  = ts4800_ic_probe,
-	.remove = ts4800_ic_remove,
+	.remove_new = ts4800_ic_remove,
 	.driver = {
 		.name = "ts4800-irqc",
 		.of_match_table = ts4800_ic_of_match,
-- 
2.42.0